Application of Time-frequency Method in Seismic Signals Processing
نویسندگان
چکیده
Spectral decomposition is an important tool for analysis of seismic data.This paper deals with the time-frequency analysis of non-stationary signals.Time-frequency method is a primary tool to analyze the evolving spectra of non-stationary signals. Short Time Fourier Transform (STFT) is a fundamental time-frequency method which reveals the frequency contents of the signal at each time point. The resolution in such representations directly depends on the sliding window length. The width of window employed in the STFT computation is a challenging task. In order to quantify the optimum window length, Renyi entropy is used for estimating the signal information, and it is suggested that optimum window width can be more efficient to analyze the seismic signals.
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